Mythra, Aegis of light

+2: Scry 2 If you both own and control this card and a card named Pyra, Aegis of fire, exile them, then meld them into Pneuma of the trinity.
+1: Until your next turn, Up to one target creature gets +3 +3 and double strike, when it deals damage to another creature exile that creature.
-3: Create Siren, a legendary 5/5 colorless construct with fliying and indestructible.